Mukhtasar Bukhari (Abridged) 2203 — Whoever burdens others, Allah will

Narrated Sayyiduna Jundub (may Allah be pleased with him): I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "Whoever performs good deeds to show off to people, Allah will expose his hidden (i.e., corrupt intention) to the people on the Day of Resurrection. And whoever puts people into hardship, Allah will put him into hardship on the Day of Resurrection." People said to him, "Give us some more advice," so he said: "The first thing to decay from a human (body) is his stomach, so whoever is able to eat pure things should do so (i.e., eat only pure and lawful things), and whoever can, should not prevent himself from entering Paradise by shedding a handful of (unlawful) blood."