“The wise man is the one who takes account of himself and strives for that which is after death. And the helpless man is the one who follows his own whims then indulges in wishful thinking about Allah.” (Using translation from Ibn Mājah 4260)  

قَالَ رَسُولُ اللهِ ﷺ «الْكَيِّسُ مَنْ دَانَ نَفْسَهُ وَعَمِلَ لِمَا بَعْدَ الْمَوْتِ وَالْعَاجِزُ مَنْ أَتْبَعَ نَفْسَهُ هَوَاهَا وَتَمَنَّى عَلَى اللهِ»  

[Machine] Two narrations that I heard from the Messenger of Allah ﷺ : He said, "I asked, 'And what are they?' He said, 'I entered upon the Messenger of Allah ﷺ and noticed something displeasing in his face. I said, 'O Messenger of Allah, what is this that I see on your face?' He said, 'There are two things that I fear for my Ummah after me: polytheism and hidden desires.' I asked, 'Is that polytheism?' He said, 'Yes.' I asked, 'And what is the hidden desire?' He said, 'A slave wakes up fasting and then his desire tempts him, so he indulges in it and abandons his fast.'"  

حَدِيثَانِ سَمِعْتُهُمَا مِنْ رَسُولِ اللهِ ﷺ قَالَ قُلْتُ وَمَا هُمَا؟ قَالَ دَخَلْتُ عَلَى رَسُولِ اللهِ ﷺ فَرَأَيْتُ فِي وَجْهِهِ شَيْئًا سَاءَنِي قُلْتُ يَا رَسُولَ اللهِ مَا هَذَا الَّذِي أَرَى فِي وَجْهِكَ؟ قَالَ «أَمْرَانِ أَتَخَوَّفُهُمَا عَلَى أُمَّتِي مِنْ بَعْدِي الشِّرْكُ وَالشَّهْوَةُ الْخَفِيَّةُ أَمَّا إِنَّهُمْ لَا يَعْبُدُونَ شَمْسًا وَلَا قَمَرًا وَلَا حَجَرًا وَلَا وَثَنًا وَلَكِنَّهُمْ يُرَاءُونَ بِأَعْمَالِهِمْ» فَقُلْتُ يَا رَسُولَ اللهِ أَشِرْكٌ ذَاكَ؟ قَالَ «نَعَمْ» قُلْتُ وَمَا الشَّهْوَةُ الْخَفِيَّةُ؟ قَالَ «يُصْبِحُ الْعَبْدُ صَائِمًا فَتَعْرِضُ لَهُ شَهْوَةٌ مِنْ شَهَوَاتِهِ فَيُوَاقِعُهَا وَيَدَعُ صَوْمَهُ»