He who forgets the prayer should say it when he remembers it, there is no explation for it, except this. Qatada said: (Allah says)" And observe prayer for remembrance of Me"  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ نَسِيَ صَلاَةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا لاَ كَفَّارَةَ لَهَا إِلاَّ ذَلِكَ قَالَ قَتَادَةُ وَأَقِمِ الصَّلاَةَ لِذِكْرِي  

[Machine] The Prophet ﷺ said: "Whoever forgets a prayer, let him pray it when he remembers, and there is no expiation for it except for that." Bahz said: "Hammam said, I heard him (the Prophet) narrating after that and he added to this statement: 'Establish prayer for My remembrance.'" [Surah Taha 20:14]  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ نَسِيَ صَلَاةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا وَلَا كَفَّارَةَ لَهَا إِلَّا ذَلِكَ قَالَ بَهْزٌ قَالَ هَمَّامٌ سَمِعْتُهُ يُحَدِّثُ بَعْدَ ذَلِكَ وَزَادَ مَعَ هَذَا الْكَلَامِ {أَقِمِ الصَّلَاةَ لِذِكْرِي} [طه 14]  

[Machine] "The Prophet ﷺ said, 'Whoever forgets a prayer should offer it when they remember it, as there is no expiation for it except for that. After that, Allah revealed in the Quran, 'Establish prayer for My remembrance.'" (Surah Taha, 20:14)  

أَنَّ النَّبِيَّ ﷺ قَالَ مَنْ نَسِيَ صَلَاةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا لَا كَفَّارَةَ لَهَا غَيْرُ ذَلِكَ وَحَدَّثَنَا بَعْدَ ذَلِكَ فَزَادَ فِيهِ {أَقِمِ الصَّلَاةَ لِذِكْرِي} [طه 14]  

[Machine] On the authority of the Prophet ﷺ who said, "Whoever forgets a prayer, then let him offer it as soon as he remembers it, and there is no expiation for it except that. Then he recited the verse, 'Establish prayer for My remembrance' [Surah Taha, verse 14]."  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ نَسِيَ صَلَاةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا وَلَا كَفَّارَةَ لَهَا إِلَّا ذَلِكَ ثُمَّ قَرَأَ قَتَادَةُ {أَقِمِ الصَّلَاةَ لِذِكْرِي} [طه 14]  

[Machine] The Messenger of Allah ﷺ said, "Whoever forgets a prayer or sleeps through it, his expiation is to pray it whenever he remembers it."  

قَالَ رَسُولُ اللهِ ﷺ مَنْ نَسِيَ صَلَاةً أَوْ نَامَ عَنْهَا فَكَفَّارَتُهَا أَنْ يُصَلِّيَهَا إِذَا ذَكَرَهَا