'Umar bin Al-Khattab (May Allah be pleased with him) reported:
Some prisoners were brought to Messenger of Allah ﷺ amongst whom there was a woman who was running (searching for her child). When she saw a child among the captives, she took hold of it, pressed it against her belly and gave it a suck. Messenger of Allah ﷺ said, "Do you think this woman would ever throw her child in fire?" We said, "By Allah, she would never throw the child in fire." Thereupon Messenger of Allah ﷺ said, "Allah is more kind to his slave than this woman is to her child".

[Al-Bukhari and Muslim].

وعن عمر بن الخطاب، رضي الله عنه ، قال: قدم رسول الله ، ﷺ، بسبي، فإذا امرأة من السبي تسعى، إذ وجدت صبياً في السبي أخذته، فألزقته ببطنها، فأرضعته، فقال رسول الله، ﷺ: “أترون هذه المرأة طارحة ولدها في النار؟” قلنا لا والله . قال:
"لله أرحم بعباده من هذه الأم بولدها" ((متفق عليه))