Musar על סנהדרין 178:8

The midrash tells us, for example, that this is what happened to Avraham because he did not invite any poor people to the feast that he made upon Yitzchok’s weaning. Commenting on the verse, “And after these matters” (Bereishis 22:1), the midrash explains that it was in response to the Satan’s indictment that the Holy One Blessed is He subsequently commanded Avraham, “Take, now, your son, your only one, Yitzchok … and offer him there for a burnt offering” (Bereishis 22:2).