What is the last time for the Isha' prayer?

The Shaykh : ... We will enter into a brief detail regarding what is the last time for the Isha' prayer. The scholars differed on this in two opinions. The opinion known to most people today is that the time for Isha' ends with the onset of the Fajr time. However, the other opinion, which is the correct one, is that the time for Isha' ends with the onset of the first half of the second part of the night. This is because the Prophet (peace and blessings be upon him) said in clear Arabic: So, the one who sleeps before praying Isha' may have his sleep drag it not only past the middle of the night, but all the way to the onset of Fajr. This happens to many people, especially workers and laborers who spend the entire day in physical and material exhaustion; these people cannot easily wake up. For that reason, the Messenger of Allah (peace and blessings be upon him) forbade sleeping before the Isha' prayer, so that one does not miss the Isha' prayer and pray it in its prescribed time. And he forbade talking after it. This is even clearer, because talking after it will take from the right of the human body, which is sleep. Every person must give his body its right of sleep, even though this varies according to age. So, the one who stays up and keeps the night awake after the Isha' prayer until twelve o'clock at night, the hours he spent in conversation and staying awake, he must make up for them. He will make up for them at the expense of what? At the expense of the Fajr time. And so his sleep, which he takes at eleven or twelve o'clock, drags it past the rising of the sun. This person is not excused and he is sinful twice. The first time is because he prioritized the cause that leads to taking the prayer out of its time. If he had not taken the prayer out of its time, he would have committed one sin. But this person, whom we assumed earlier, who stayed up until the middle of the night and did not wake up until after the sun had risen, is sinful twice. The first sin is that he adopted the cause, and the second sin is that the effect occurred, which is the loss of the prayer due to this staying up. If we know this detail, is there anyone among those present who is unaware that the television is one of the strongest causes for making the people of the house stay up late? No one doubts this fact at all. Therefore, it is not permissible for the Muslim, who believes in Allah and the Last Day and knows these legal facts on one hand, and those realistic facts on the other hand, to bring the television into his home because of the harms that result from it. So this is our answer to your second question. And now we allow the others to ask what they have.