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  

He who forgets the prayer, or he slept (and it was omitted), its expiation is (only) that he should observe it when he remembers it.  

نَبِيُّ اللَّهِ ﷺ مَنْ نَسِيَ صَلاَةً أَوْ نَامَ عَنْهَا فَكَفَّارَتُهَا أَنْ يُصَلِّيَهَا إِذَا ذَكَرَهَا  

When any one of you omits the prayer due to sleep or he forgets it, he should observe it when he remembers it, for Allah has said:" Observe prayer for remembrance of Me."  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا رَقَدَ أَحَدُكُمْ عَنِ الصَّلاَةِ أَوْ غَفَلَ عَنْهَا فَلْيُصَلِّهَا إِذَا ذَكَرَهَا فَإِنَّ اللَّهَ يَقُولُ أَقِمِ الصَّلاَةَ لِذِكْرِي  

"Whoever forgets a prayer, let him pray it when he remembers it, for Allah says: and perform the Salah for My remembrance." [1] [1] Ta-Ha 20:14.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ نَسِيَ صَلاَةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا فَإِنَّ اللَّهَ تَعَالَى قَالَ { أَقِمِ الصَّلاَةَ لِذِكْرِي }  

"The Messenger of Allah ﷺ said: 'Whoever forgets a prayer, let him pray it when he remembers it, for Allah says: "and perform prayer when you remember (li dhikra).'" I said to Az-Zuhri: "Is that how the Messenger of Allah ﷺ recited it?" He said: "Yes."  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ نَسِيَ صَلاَةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا فَإِنَّ اللَّهَ تَعَالَى يَقُولُ { أَقِمِ الصَّلاَةِ لِلذِّكْرَى } قُلْتُ لِلزُّهْرِيِّ هَكَذَا قَرَأَهَا رَسُولُ اللَّهِ ﷺ قَالَ نَعَمْ  

When any one of you omits the prayer due to sleep or he forgets it, he should observe it when he remembers it, for Allah has said:" Observe prayer for remembrance of Me." (Using translation from Muslim 684d)  

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا رَقَدَ أَحَدُكُمْ عَنِ الصَّلَاةِ أَوْ غَفَلَ عَنْهَا فَلْيُصَلِّهَا إِذَا ذَكَرَهَا فَإِنَّ اللهَ يَقُولُ {أَقِمِ الصَّلَاةَ لِذِكْرِي} [طه 14]  

[Machine] The Messenger of Allah ﷺ said: "Whoever forgets a prayer or sleeps through it, then the atonement for it is to pray it when they remember it."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنْ نَسِيَ صَلَاةً أَوْ نَامَ عَنْهَا فَإِنَّ كَفَّارَتَهَا أَنْ يُصَلِّيَهَا إِذَا ذَكَرَهَا  

The Prophet ﷺ said, "If anyone forgets a prayer he should pray that prayer when he remembers it. There is no expiation except to pray the same." Then he recited: "Establish prayer for My (i.e. Allah's) remembrance." (20.14). (Using translation from Bukhārī 597)  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَنْ نَسِيَ صَلَاةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا لَا كَفَّارَةَ لَهَا إِلَّا ذَلِكَ»  

"مَنْ نَسِيَ الصَّلاةَ فَلْيُصَلِهَا إِذَا ذَكرَهَا، فَإِنَّ اللهَ قَال: أَقِم الصَّلاةَ لِذِكْرِي".