(Swaffaath) 37 : 37
بَلْ جَاءَ بِالْحَقِّ وَصَدَّقَ الْمُرْسَلِينَ

Nay, he has come with the Truth, and testifying the Messengers.

Truth is one of the 40 names of Adhikr, as explained in verse 2: 119. Messenger Muhammad, the last Prophet, and Messenger, as mentioned in verse 33: 40, testifies to all 312 Messengers who came before him from Allah, just as Adhikr, revealed to Messenger Muhammad, testifies to all 312 Books revealed by Allah, as stated in verse 5: 48. See explanation 16: 43-44; 34: 49-50; 35: 24-25.