The Halaal is Clear and the Haraam is Clear | Iman An Nawawi
An 'Abi 3Abdillahi N3umaani lbn Basheer(in)
raDhiyAllahu anhummaa qaal: sami3tu
RasoolAllahi Sal Allahu 3alaihi wa sallama yaqool: "inna al Halaala bayyin(un), wa 'inna al Haraama bayyin(un) wa baynahumma 'umoorun mushtabihaat(un) la ya3lamuhunna katheerun mina al naas(i). Fa man ttaqaa ash-shubuhaat(i) faqad stabra'a lideenihi wa 3irDhihi.
wa man waqa3a fi shubuhaati waqa3a fil Haraam, ka ar raa3ee yar3aa Hawla al Himaa yooshiku 'ay yarta3a fih. 'a laa wa 'inna likuli malikin Himan, 'a laa wa 'inna Himaa Allahi maHaarimuhu. 'a laa wa 'inna fil jasadi maDhghatan, idhaa SalaHat SalaHa al jasadu kulluhu, wa idhaa fasadat fasada al jasadu kulluhu, 'a laa wa hiya al qalb".
On the authority of Aboo Abdillaah an-Nu'maan the sonof Basheer (radiAllaahu 'anhumaa), who said: I heard the Messenger of Allaah (sallAllaahu alayhi wa sallam) say:
Translation Of The Hadith
That which is lawful is clear and that which is unlawful is clear, and between the two of them are doubtful matters about which many people do not know. Thus he who avoids doubtful matters clears himself in regard to his religion and his honour, but he who falls into doubtful matters [eventually] falls into that which is unlawful, like the shepherd who pastures around a sanctuary, all but grazing therein.
Truly every king has a sanctuary, and truly Allaah's sanctuary is His prohibitions. Truly in the body there is a morsel of flesh, which, if it be whole, all the body is whole, and which, if it is diseased, all of [the body] is diseased. Truly, it is the heart.