Dividing Qiyaam al-layl into two parts during the last ten days of Ramadan

Question

I hope that you could tell me about the opinions of the scholars with regard to the ruling on dividing Taraweeh prayers in the last ten days of Ramadan into two parts: at the beginning of the night and at the end, as is done in many mosques. Please also mention the evidence if possible.

The Reward for Qiyam ul Lail

Praise be to Allaah.  

Qiyaam al-layl is Sunnah mu’akkadah (a confirmed Sunnah). Many texts of the Qur’aan and Sunnah encourage it and speak of its high status and great reward. 

Qiyaam al-layl plays a great role in strengthening one's faith and helping one to do good deeds. Allaah says (interpretation of the meaning): 

“O you wrapped in garments (i.e. Prophet Muhammad)!

2. Stand (to pray) all night, except a little —

3. Half of it or a little less than that,

4. Or a little more. And recite the Qur’aan (aloud) in a slow, (pleasant tone and) style.

5. Verily, We shall send down to you a weighty Word (i.e. obligations, laws).

6. Verily, the rising by night (for Tahajjud prayer) is very hard and most potent and good for governing oneself, and most suitable for (understanding) the Word (of Allaah)”

[al-Muzzamil 73:1-6]