المحيط
كلمة (المحيط) في اللغة اسم فاعل من الفعل أحاطَ ومضارعه يُحيط،...
Buraydah (may Allah be pleased with him) reported that the Messenger (may Allah's peace and blessings be upon him) said: "Do not call a hypocrite a master, for if he is a master, you will have angered your Almighty Lord."
Meaning of the Hadīth: If a hypocrite is a master among his people and you call him as such, you will incur the wrath of Allah, as you revere that hypocrite who does not deserve such treatment; and if he is not a master or leader, you will be lying and flattering. So, in both cases, he forbids us from addressing a hypocrite as master, with the same applying to a disbeliever, a defiantly disobedient Muslim, or a heretic, for they do not deserve this title at all. The prohibition was addressed to the Companions and those who came after them. Hypocrites at the time were of two types: First: Hypocrites known only to the Prophet (may Allah's peace and blessings be upon him) and his confidant Hudhayfah (may Allah be pleased with him). Second: Hypocrites known among the Companions for their hypocrisy, such as ‘Abdullāh ibn Ubayy. Those fall under the ruling stated in the Hadīth.