'Umar b. al-Khaṭṭāb asked his daughter (may Allah be pleased with them):
"... I want to ask you about a matter which concerns me, dispel it for me. How long does a woman long for her husband (for intimate purposes)?"
She lowered her head and was shy.
He said: "Truly, Allāh is not shy of the truth."
She gestured her hand indicating three months, and if that was not possible then four months."
● [تاريخ الخلفاء صفحة ١٤٢]
Based on such insights, it is narrated that ʿUmar (RA) established a guideline limiting the length of time a man serving in the army could remain away from his wife to four months. This ensured that a woman's needs—both emotional and physical—were not neglected due to prolonged absence.