Jabir (may Allah be pleased with him) said: Nu'man bin Qawqal (may Allah be pleased with him) came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah (peace and blessings be upon him)! What is your view: if I pray the obligatory prayers, regard the unlawful as unlawful and the lawful as lawful, will I enter Paradise? He (peace and blessings be upon him) said: "Yes."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19705