[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
[Machine] The Messenger of Allah, ﷺ , said: "Whoever forgets a prayer, let him perform it when he remembers it, as there is no expiation for it except that." Qatadah said: "{Establish prayer for My remembrance}" [Surah Taha 20:14]
أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنْ نَسِيَ صَلَاةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا لَا كَفَّارَةَ لَهَا إِلَّا ذَلِكَ قَالَ قَتَادَةُ { أَقِمِ الصَّلَاةَ لِذِكْرِي } [طه 14]