Expecting to receive something of them - Because it was a constant custom for all who entered the temple to carry money with them to give to the treasury, or to the poor, or to both. It was on this ground that the friends of the lame man laid him at the gate of the temple, as this was the most likely place to receive alms.

And he (a) gave heed unto them, expecting to receive something of them.
(a) Both with heart and eyes.

And he gave heed unto them,.... Or "he looked at them", as the Syriac version renders it, as they bid him: he was not only attentive to them in his mind, but he directed his eyes towards them, and looked wistly at them. This clause is left out in the Ethiopic version.
Expecting to receive something of them; not a cure for his lameness, which he little thought of, but some money, as an alms.