Hadith 6:536
Mu'tamir narrated to us, from his father, from Bakr ibn 'Abdullah, who said: When he would carry [something], he would say: "In the name of Allah" (Bismillah). And he would glorify Allah (tasbih) for what he carried.
حدثنا معتمر عن أبيه عن بكر بن عبد الله قال إذا حمل قال بسم الله ويسبح ما حمله