SB 10.7.8
drstva yasoda-pramukha vraja-striya
autthanike karmani yah samagatah
nandadayas cadbhuta-darsanakulah
katham svayam vai sakatam viparyagat
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When mother Yasoda and the other ladies who had assembled for the utthana festival, and all the men, headed by Nanda Maharaja, saw the wonderful situation, they began to wonder how the handcart had collapsed by itself. They began to wander here and there, trying to find the cause, but were unable to do so.