Is it permissible for a worshipper to alert the person next to him, while praying, about aligning the row by gesturing with the hand?

It is permissible for a worshiper to alert someone next to him to straighten the row by signaling with his hand, because this movement is for the benefit of the prayer and does not harm it. The proof for this is the hadith: "Straighten your rows, align your shoulders, be gentle with the hands of your brothers, and close the gaps, for Satan enters through the spaces between you like a young lamb." The evidence in it is the Prophet's saying: "be gentle with the hands of your brothers," meaning if a worshiper places his hand on his brother's shoulder, he should be gentle with him by inclining his shoulder, or if he signals to him to straighten the row, he should straighten it, or if he wants to enter the row, space should be made for him.