AssalamuAlaikum, is it okay to take breaks between the units of prayer? I tend to get fatigued easily and find I need to wait before continuing. Also sau I have prayed 4 rakats of Isha and I leave to assist a family member in something quick before doing the next 4. Is that okay? I can't find any information online for this.
Alaikumassalam wa rahmatullah,
You cannot take breaks within the prayers (as you seem to know already), but you can take breaks between them. A prayer that is 4 rakats cannot be broken up, but you can take a break before performing the voluntary prayer after that. And if you are performing tahajjud you can perform 2 rakats, take a break, then go on to perform the next 2 rakats.
- Fatwa from the Qatari website IslamWeb on the permissibility of taking a long break before performing the voluntary prayers that come after the obligatory ones (Arabic PDF).