Not graded
Bulugh al-Maram 79
وَعَنْ أَنَسِ]بْنِ مَالِكٍ] - رضى الله عنه - { أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -اِحْتَجَمَ وَصَلَّى, وَلَمْ يَتَوَضَّأْ } أَخْرَجَهُ اَلدَّارَقُطْنِيُّ, وَلَيَّنَه ُ 1 .
1 - ضعيف. رواه الدارقطني (151-152).
Narrated Anas bin Malik (rad):
The Prophet (ﷺ) had blood extracted from his body and offered the prayer and did not perform (a new) ablution. [Reported by Ad-Daraqutni who graded it Da’if (weak)].
Cited in Bulugh al-Maram (No. 79).