"مَا فَوْقَ اَلْإِزَارِ"
Narrated Mu'adh Ibn Jabal (RAA): He asked the Prophet (Peace be upon him), “What is lawful for a man regarding his wife when she is menstruating?" and he replied, "What is above the waist wrapper (Izar).”[13] [Reported by Abu Da'ud and graded it Da'if.]