A man who buys something and asks for extra

Sayyiduna Ibn Mas'ud (may Allah be pleased with him) passed by a man who was weighing some powder and had tipped the scale. Sayyiduna Ibn Mas'ud said: Set the tongue of the balance level; when it is level, add from your own wealth whatever you wish.

Abu al-Hudhayl said: I saw Sayyiduna Ammar bin Yasir (may Allah be pleased with him) buying fodder (qatt). He (may Allah be pleased with him) was asking the seller for an extra rope of it, and he refused to give more. I saw Sayyiduna Ammar (may Allah be pleased with him) disputing with him over it, and I do not know which of them won in that dispute.

Something similar is also reported from Ibn Abi al-Hudhayl (may Allah have mercy on him).

Sayyiduna Ali (may Allah be pleased with him) passed by a slave woman who was buying meat, and she was telling the shopkeeper: Add a little more. Sayyiduna Ali (may Allah be pleased with him) said to the shopkeeper: Add a little more for her, for this is a very great cause of blessing in a sale.

Ibrahim (may Allah have mercy on him) said: There is no harm in asking for a little extra in a sale.

Abu Hasin (may Allah have mercy on him) narrated from a man of al-Nakha' that he saw Sayyiduna Ammar (may Allah be pleased with him) buying fodder (qatt) from a man. He was disputing with him over an extra rope of it; Sayyiduna Ammar (may Allah be pleased with him) was saying: Give me more, and that man was saying: No.

Sayyiduna Ibn Umar (may Allah be pleased with them both) said: When you buy meat, do not ask for extra.