The Sunnah (whatever is reported from the Prophet) in Sujud is to place the hands in line with the shoulders, according to the Hadith narrated by
Abu Humayd (may Allah be pleased with him) who said about the Prophet (peace be upon him):
"When he (peace be upon him) performed Sujud, he placed his nose and forehead on the ground perfectly, kept his hands away from his sides and put his palms in line with his shoulders."
Abu Dawud and
Al-Tirmidhy, who ranked it as Sahih [authentic]) It is also reported that
"When he (peace be upon him) performed Sujud, he used to begin by placing his knees on the ground, then his hands, and then his face."
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.