[Ali Imran]

According to Mubrakpuri, Stillman, Peters and Adil and Muir, when Sa'd arrived, his fellow Aws pleaded for leniency towards the Qurayza and on his request pledged that they would abide by his decision.[37] He then pronounced that "the men should be killed, the property divided, and the women and children taken as captives". Muhammad approved of the ruling, calling it similar to God's judgment.[8][9][10][12][13] Mubarakpuri states that the tribesmen who reached puberty were beheaded.[1]

Good. So now you know it wasn't our prophet who suka suka ordered the beheading.