994. hadíth
وَقَالَ أَمِيرُ اَلْمُؤْمِنِينَ عَلَيْهِ اَلسَّلاَمُ: «سَجْدَتَا اَلسَّهْوِ بَعْدَ اَلتَّسْلِيمِ وَ قَبْلَ اَلْكَلاَمِ.
The Commander of the Faithful Imam Ali ibn Abi Talib (a.s) said: "The two prostrations of forgetfulness (Sajdah al-Sahw) are after the Tasleem (salutation) and before speaking."