Dua is not accepted by those who consume haram (prohibited)

O people, Allah is Good and He therefore, accepts only that which is good. And Allah commanded the believers as He commanded the Messengers by saying: "O Messengers, eat of the good things, and do good deeds; verily I am aware of what you do" (xxiii. 51). And He said: "O those who believe, eat of the good things that We gave you" (ii. 172). He then made a mention of a person who travels widely, his hair disheveled and covered with dust. He lifts his hand towards the sky (and thus makes the supplication): "O Lord, O Lord," whereas his diet is unlawful, his drink is unlawful, and his clothes are unlawful and his nourishment is unlawful. How can then his supplication be accepted?  

قَالَ رَسُولُ اللَّهِ ﷺ: «أَيُّهَا النَّاسُ إِنَّ اللَّهَ طَيِّبٌ، لاَ يَقْبَلُ إِلاَّ طَيِّبًا۔ وَإِنَّ اللَّهَ أَمَرَ الْمُؤْمِنِينَ بِمَا أَمَرَ بِهِ الْمُرْسَلِينَ» فَقَالَ «{ يَا أَيُّهَا الرُّسُلُ كُلُوا مِنَ الطَّيِّبَاتِ وَاعْمَلُوا صَالِحًا إِنِّي بِمَا تَعْمَلُونَ عَلِيمٌ }» وَقَالَ «{ يَا أَيُّهَا الَّذِينَ آمَنُوا كُلُوا مِنْ طَيِّبَاتِ مَا رَزَقْنَاكُمْ }»

ثُمَّ ذَكَرَ الرَّجُلَ يُطِيلُ السَّفَرَ أَشْعَثَ أَغْبَرَ يَمُدُّ يَدَيْهِ إِلَى السَّمَاءِ يَا رَبِّ يَا رَبِّ «وَمَطْعَمُهُ حَرَامٌ، وَمَشْرَبُهُ حَرَامٌ، وَمَلْبَسُهُ حَرَامٌ، وَغُذِيَ بِالْحَرَامِ، فَأَنَّى يُسْتَجَابُ لِذَلِكَ؟»  

that the Messenger of Allah ﷺ said: "O you people! Indeed Allah is Tayyib (good) and he does not accept but what is good. And indeed Allah ordered the believers with what He ordered the Messengers. He ﷺ said: 'O you Messengers! Eat of the good things and do righteous deeds. Verily I am well acquainted with what you do (23:51).' And He said: 'O you who believe! Eat from the good things We have provided you (2:172).' He said: "And he mentioned a man: 'Who is undertaking a long journey, whose hair is dishevelled and he is covered with dust. He raises his hands to the heavens and says: "O Lord! O Lord!" Yet his food is from the unlawful, his drink is from the unlawful, his clothing is from the unlawful, and he was nourished by the unlawful. So how can that be accepted?'"  

رَسُولُ اللَّهِ ﷺ يَا أَيُّهَا النَّاسُ إِنَّ اللَّهَ طَيِّبٌ وَلاَ يَقْبَلُ إِلاَّ طَيِّبًا وَإِنَّ اللَّهَ أَمَرَ الْمُؤْمِنِينَ بِمَا أَمَرَ بِهِ الْمُرْسَلِينَ فَقَالَ (يَا أَيُّهَا الرُّسُلُ كُلُوا مِنَ الطَّيِّبَاتِ وَاعْمَلُوا صَالِحًا إِنِّي بِمَا تَعْمَلُونَ عَلِيمٌ ) وَقَالَ أَيُّهَا الَّذِينَ آمَنُوا كُلُوا مِنْ طَيِّبَاتِ مَا رَزَقْنَاكُمْ ) قَالَ وَذَكَرَ الرَّجُلَ يُطِيلُ السَّفَرَ أَشْعَثَ أَغْبَرَ يَمُدُّ يَدَهُ إِلَى السَّمَاءِ يَا رَبِّ يَا رَبِّ وَمَطْعَمُهُ حَرَامٌ وَمَشْرَبُهُ حَرَامٌ وَمَلْبَسُهُ حَرَامٌ وَغُذِيَ بِالْحَرَامِ فَأَنَّى يُسْتَجَابُ لِذَلِكَ  

that the Messenger of Allah ﷺ said: "O you people! Indeed Allah is Tayyib (good) and he does not accept but what is good. And indeed Allah ordered the believers with what He ordered the Messengers. He ﷺ said: 'O you Messengers! Eat of the good things and do righteous deeds. Verily I am well acquainted with what you do (23:51).' And He said: 'O you who believe! Eat from the good things We have provided you (2:172).' He said: "And he mentioned a man: 'Who is undertaking a long journey, whose hair is dishevelled and he is covered with dust. He raises his hands to the heavens and says: "O Lord! O Lord!" Yet his food is from the unlawful, his drink is from the unlawful, his clothing is from the unlawful, and he was nourished by the unlawful. So how can that be accepted?'" (Using translation from Tirmidhī 2989)  

قَالَ رَسُولُ اللَّهِ ﷺ يَا أَيُّهَا النَّاسُ إِنَّ اللَّهَ طَيِّبٌ لَا يَقْبَلُ إِلَّا الطَّيِّبَ إِنَّ اللَّهَ أَمَرَ الْمُؤْمِنِينَ بِمَا أَمَرَ بِهِ الْمُرْسَلِينَ قَالَ {يَا أَيُّهَا الرُّسُلُ كُلُوا مِنَ الطَّيِّبَاتِ وَاعْمَلُوا صَالِحًا إِنِّي بِمَا تَعْمَلُونَ عَلِيمٌ} [المؤمنون 51] وَقَالَ {يَا أَيُّهَا الَّذِينَ آمَنُوا كُلُوا مِنْ طَيِّبَاتِ مَا رَزَقْنَاكُمْ وَاشْكُرُوا لِلَّهِ إِنْ كُنْتُمْ إِيَّاهُ تَعْبُدُونَ} [البقرة 172] قَالَ ثُمَّ ذَكَرَ الرَّجُلَ يُطِيلُ السَّفَرَ أَشْعَثَ أَغْبَرَ يَمُدُّ يَدَيْهِ إِلَى السَّمَاءِ يَا رَبِّ يَا رَبِّ وَمَطْعَمُهُ حَرَامٌ وَمَلْبَسُهُ حَرَامٌ وَمَشْرَبُهُ حَرَامٌ وَغُذِّيَ بِالْحَرَامِ فَأَنَّى يُسْتَجَابُ لِذَلِكَ؟  

O people, Allah is Good and He therefore, accepts only that which is good. And Allah commanded the believers as He commanded the Messengers by saying: "O Messengers, eat of the good things, and do good deeds; verily I am aware of what you do" (xxiii. 51). And He said: "O those who believe, eat of the good things that We gave you" (ii. 172). He then made a mention of a person who travels widely, his hair disheveled and covered with dust. He lifts his hand towards the sky (and thus makes the supplication): "O Lord, O Lord," whereas his diet is unlawful, his drink is unlawful, and his clothes are unlawful and his nourishment is unlawful. How can then his supplication be accepted? (Using translation from Muslim 1015)   

قَالَ رَسُولُ اللهِ ﷺ إِنَّ اللهَ طَيِّبٌ لَا يَقْبَلُ إِلَّا الطَّيِّبَ وَإِنَّ اللهَ أَمَرَ الْمُؤْمِنِينَ بِمَا أَمَرَ بِهِ الْمُرْسَلِينَ قَالَ {يَا أَيُّهَا الرُّسُلُ كُلُوا مِنَ الطَّيِّبَاتِ وَاعْمَلُوا صَالِحًا إِنِّي بِمَا تَعْمَلُونَ عَلِيمٌ} [المؤمنون 51] وَقَالَ {يَا أَيُّهَا الَّذِينَ آمَنُوا كُلُوا مِنْ طَيِّبَاتِ مَا رَزَقْنَاكُمْ} [البقرة 172] ثُمَّ ذَكَرَ الرَّجُلُ يُطِيلُ السَّفَرَ أَشْعَثَ أَغْبَرَ يَمُدُّ يَدَيْهِ إِلَى السَّمَاءِ يَا رَبِّ يَا رَبِّ وَمَطْعَمُهُ حَرَامٌ وَمَشْرَبُهُ حَرَامٌ وَمَلْبَسُهُ حَرَامٌ وَقَدْ غُذِّيَ بِالْحَرَامِ فَأَنَّى يُسْتَجَابُ لَهُ  

"أَيُّهَا النَّاسُ إِنْ اللهَ طَيِّبٌ لَا يَقْبلُ إلا طيِّبًا، وإنَّ اللهَ أمَرَ المؤمِنينَ بمَا أمَرَ بِهِ الْمُرْسَلِينَ فَقَال: {يَا أَيُّهَا الرُّسُلُ كُلُوا مِنَ الطَّيِّبَاتِ وَاعْمَلُوا صَالِحًا إِنِّي بِمَا تَعْمَلُونَ عَلِيمٌ}، وَقَال: {يَا أَيُّهَا الَّذِينَ آمَنُوا كُلُوا مِنْ طَيِّبَاتِ مَا رَزَقْنَاكُمْ}، ثُمَّ ذَكرَ الرَّجَّلَ يُطِيل السَّفَرَ أَشْعَثَ أَغْبَرَ يَمُدُّ يَدَيهِ إِلَى السَّماءِ، يَا رَبِّ، يَا رَبِّ وَمَطعَمُه حَرَامٌ وَمَشْرَبُهُ حَرَامٌ، وَمَلْبَسُهُ حَرَامٌ، وَغُذى بِالْحَرام فَأَنَّى يُسْتَجَابُ لِذَلِكَ ".