‘Imran b. Husain said that the Prophet (ﷺ) led them in prayer and forgot something, so he made two prostrations, then uttered the <i>shahada</i>, then gave the salutation. Tirmidhi transmitted it and said this is a <i>hasan gharib</i> tradition.

عَنْ عِمْرَانَ بْنِ حُصَيْنٍ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ صَلَّى بهم فَسَهَا فَسجدَ سَجْدَتَيْنِ ثُمَّ تَشَهَّدَ ثُمَّ سَلَّمَ. رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ