Hadith.5810 - The Prophet (sw) said;
"Whoever does not show mercy (to others) will not be shown mercy (by Allah (swt) in the Hereafter)."
5810 - مَنْ لاَ يَرْحَمْ لاَ يُرْحَمْ".
Similar narrations
Man Lā Yaḥḍuruh al-Faqīh #852Hadith.5806 - The Prophet (sw) said; "Show mercy to those on the earth, and the One (Allah (swt)) in the heavens will show mercy to you."
Man Lā Yaḥḍuruh al-Faqīh #861Hadith.5815 - The Prophet (sw) said;
"He does not (rightfully) thank Allah (swt), who does not thank people." (for doing good onto him)