At a crossroads in Bogura stood Sajjad's little tea stall. His milk tea was famous even in the neighbouring streets.
One day the stall-keeper next door whispered: brother, add a little water to the milk; no one will notice, and your profit doubles. Sajjad smiled: people drink my tea and pray for me — I won't adulterate it.
A few months later the neighbour's customers began to drift away — his tea had lost its taste. And Sajjad's stall was busy from morning till night.
Sajjad knew that Allah has warned those who give short measure. To him every cup was a trust.
وَيۡلٞ لِّلۡمُطَفِّفِينَ ٱلَّذِينَ إِذَا ٱكۡتَالُواْ عَلَى ٱلنَّاسِ يَسۡتَوۡفُونَ وَإِذَا كَالُوهُمۡ أَو وَّزَنُوهُمۡ يُخۡسِرُونَ
“Woe to those who give less [than due], Who, when they take a measure from people, take in full. But if they give by measure or by weight to them, they cause loss.”
Surah Al-Mutaffifin 83:1–3
Translation: Saheeh International (QuranEnc)