yes ofcorse its haram.
Honesty is an essential fundamental in all dealings, but especially in selling. The Prophet (peace and blessings of Allaah be upon him) said:
“The two parties engaged in a transaction have the choice of either going ahead with the transaction or canceling it, until they part. If they are open and honest, their transaction will be blessed for them, but if they conceal things and tell lies, that will destroy the Barakah (blessing) of their transaction.” (Narrated by al-Bukhaari, no. 2079 (2/82-83), and by Muslim, 1532 (3/162)from the hadeeth of Hakeem ibn Hizaam).
One of the essential means of being honest is to avoid over-praising a product or service or exaggerating about it, for this could go beyond the bounds of being open and honest. The Prophet (peace and blessings of Allaah be upon him) said:
“Try not to praise products to one another” (Al-Tirmidhi, no. 1268), i.e., the vendor should not praise it in order to encourage the one who hears him to buy it, so that the only reason he buys it is what the vendor says. Some of the scholars counted praise of a product for what it is as a kind of insane or senseless speech from which people should refrain. The guideline here is that the vendor should refrain from saying anything which could later result in regret on the part of the purchaser.
the vendor should avoid any kind of cheating and deception in his; i.e., he
should not make the product appear more attractive than it is, or conceal its faults, or praise it in terms of characteristics and features that it does not have. All of this is haraam, as stated above.
The Prophet (peace and blessings of Allaah be upon him) said:
“None of you truly believes until he wants for his brother what he wants for himself.” (Narrated by al-Bukhaari, no. 13 (1/2), and by Muslim, no. 45 (1/67)from the hadeeth of Anas ibn Maalik). The guideline here is that if something would cause him distress if it were done to him, he should not do it to others. The Prophet (peace and blessings of Allaah be upon him) said:
“There should be no harm and no reciprocating of harm.” (Narrated by Ahmad, 5/326-327, 313), and by Ibn Maajah, no. 2340-2341, from the hadeeth of ‘Ubaadah ibn Saamit).
think of it this way, no one will ever buy from you again, nor you will have any reputation, with Allah nor the customers!!
