What is the ruling on staying up late for permissible matters if it does not lead to missing the Fajr prayer or other obligatory duties?

It is disliked to stay up late and engage in night talk after the 'Isha prayer, even for permissible matters, as Abu Barzah narrated that the Messenger of Allah, peace and blessings be upon him, disliked sleeping before 'Isha and conversing after it. Scholars have agreed on the dislike of conversing after it, except for that which is good. Among the reasons for this dislike is that staying up late leads to laziness during the day and slackening in acts of worship, and it may lead to missing the Fajr prayer. This dislike is exempted if there is a need to stay up late or if there is an overriding benefit, such as studying knowledge, conversing with a guest, or talking for the purpose of reconciling people.