Mishkat al-Masabih 4 Prayer كتاب الصلاة 13

وَعَن زيد بن خَالِد الْجُهَنِيِّ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ صَلَّى سَجْدَتَيْنِ لَا يَسْهُو فِيهِمَا غَفَرَ اللَّهُ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ» . رَوَاهُ أَحْمَدُ

Zaid b Khalid al-Juhani reported God’s Messenger as saying, “If anyone observes two prostrations without being negligent in them, God will forgive him his previous sins.” Ahmad transmitted it.