‘coolness to the eye’ is an old Arabic expression which from a spiritual perspective means to bring joy, peace, or happiness. “Our Lord, grant us from among our wives and offspring comfort to our eyes and make us a leader for the righteous.”
Rabbana Hablana min azwaajina wadhurriy-yatina, qurrata ‘ayioni wa-jalna lil-muttaqeena Imaama Here’s a short du’a we can recite asking Allah (swt) to grant you a blessed child: