Nisaa
Janabahh is impurity from sexual activity and it requires Ghusl. It occurs in two cases: after sexual intercourse and ejaculation (release of Maniy - fluid emitted after orgasm when climax is reached), even without sexual intercourse.
In the case of sexual intercourse, it occurs when the private part of the man enters the wife's private part, and regardless of whether there was any orgasm, discharge or not from both sides. Abu Hurayrah (Radi'Allahu Anhu) narrated that the Prophet (Salla Allahu 'Alayhi Wa Sallam) said: "When a man sits between the four parts (arms and legs of his wife) and has intercourse with her, then Ghusl is obligatory." (Narrated by al-Bukhari, and Muslim, the latter added: "Even if he does not ejaculate.").
In the case of Maniy emitted after orgasm, women also need to perform Ghusl. This applies for Maniy emitted during intimacy with their husband, or even in the case of wet dreams. Abu Sa'id al-Khudri reported that the Prophet (Salla Allahu 'Alayhi Wa Sallam) said in a hadith: "Water is only made obligatory due to the fluid (i.e., meaning Ghusl is required when semen is emitted)." (Narrated by Muslim).
Women should distinguish between Maniy and the other type of discharges that can come out from intimacy, knowing the fluid that lubricates the vagina for easier intercourse. Maniy is yellow and thin and is emitted after orgasm, usually followed by a feeling of physical exhaustion. Umm Salamah (Radi'Allahu Anha) said: The Prophet (Salla Allahu 'Alayhi Wa Sallam) said: "The water of the man is thick and white, and the water of the woman is thin and yellow." (Narrated by Muslim). If this is emitted, Ghusl becomes obligatory. On the other hand, the lubricating discharge does not necessitate Ghusl but requires Wudu.
A person in Janabah faces the same restriction on touching the Mushaf as a menstruating woman, until Ghusl restores their purity. The same is true of reciting Qur'an during Janabah: it rests on its own hadith and is not simply borrowed from the ruling on hayd.