T Worthy?

[dan74]

A was making a push late in the game to close the gap to four with just less than a minute left in the game.

A1 drives the lane for a layup, gets fouled by B1, and the ball goes in. I report and then grant a timeout to B. As the players were getting to their respective spots following the TO, B1 said as passing by me, just loud enough for me to hear, "That was a weak foul."

As background, B1 reacted with emotion a couple times earlier in the game, but I didn't think it was unsporting.

Would like your opinions whether you would have issue a T to B1 for his comment. Thanks in advance.