Sahih al-Bukhari, Book 65, Hadith 4852 (In-Book) ⓘ
Narrated Mujahid: Ibn `Abbas said, "Allah ordered His Prophet to celebrate Allah's praises after all prayers." He refers to His Statement: 'After the prayers.' (50.40)
حَدَّثَنَا آدَمُ، حَدَّثَنَا وَرْقَاءُ، عَنِ ابْنِ أَبِي نَجِيحٍ، عَنْ مُجَاهِدٍ، قَالَ ابْنُ عَبَّاسٍ أَمَرَهُ أَنْ يُسَبِّحَ، فِي أَدْبَارِ الصَّلَوَاتِ كُلِّهَا. يَعْنِي قَوْلَهُ {وَأَدْبَارَ السُّجُودِ}
also referenced under: Hadith 4852 (DarusSalam) & Volume 6, Book 60, Hadith 375 (USC-MSA)