It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: A person cannot be a complete believer until he gives up lying even in jest, and gives up quarreling even when he is truthful.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8630
Hadith Gradingحکم دارالسلام:إسنادہ ضعیف ، مکحول لم یسمع من أبي ھریرۃ ، و منصور مجھول