Once the shadow reaches it’s smallest size...
Once the shadow reaches it’s smallest size, it starts to turn to the east and will then start increasing in size once again, and at this moment, midday (according to Islamic Law) has started, and thus begins the time for Salatul Zuhr.[^1] What is the time for Maghrib? Issue 154: Maghrib is that time when the redness in the eastern sky that appears after the setting of the sun is seen, passes overhead.
Calculating Midnight Issue 155: To calculate midnight, which is the final time to perform Salatul ‘Isha, according to Ihtiyat Wajib, the time between the setting of the sun and (the time) of the Adhan of Fajr should be divided in two.[^2] The Rules for the Times of Salat Issue 156: The Salat, other than the daily Salat do not have a specific time (to be read), rather they are related to a specific time and event which makes them become Wajib.
For example, Salatul Ayat is related to events like earthquakes, solar eclipses, lunar eclipses and other natural occurrences. On the other hand, Salatul Mayyit, becomes Wajib when a Muslim passes away. Issue 157: If the complete Salat is read before its time has set in, either intentionally or unintentionally, that Salat will be void.
If the Salat is read in is specific time, then it is referred to as Salatul -Ada in Islamic terminology, and if it is read after the time has elapsed, then it is referred to as Salatul Qadha. Issue 158: A person must read his Salat in its specified time, and if one intentionally does not pray it in this time, then he has committed a sin. Issue 159: It is Mustahab that a person read his Salat right when the time sets in, and the closer that it is read to when it becomes time, the better it is.
However, if it is delayed for a good reason, such as delaying the Salat so it can be read in Jama’at, then this is better. Issue 160: If the time for Salat is so short that if the person prays the Mustahabbat of the Salat, a part of the Salat will be performed after it’s time, then he must leave out the Mustahabbat. For example, if one wants to pray the Qunut, but the time will pass for the Salat, then one must not perform the Qunut.
Issue 161: A person must read Salatul ‘Asr after Salatul Zuhr and Salatul ‘Isha after Salatul Maghrib, and if one intentionally prays Salatul ‘Asr before Salatul Zuhr or Salatul ‘Isha before Salatul Maghrib, then the Salat will be void.