Following is the Du`a and Ruqya for love and attraction which people call Du`aof Hazrat Dawud (upon him peace) is as follows:
1- Fast on a Thursday.
2- Thursday night wake up after midnight, make wudu‘, pray two rak`ats.
3- Write on a piece of paper verse 9:129
فَإِن تَوَلَّوْاْ فَقُلْ حَسْبِيَ اللّهُ لا إِلَـهَ إِلاَّ هُوَ عَلَيْهِ تَوَكَّلْتُ وَهُوَ رَبُّ الْعَرْشِ الْعَظِيمِ
4- Recite it thirty times. Each time you recite it, say this du`a:
اللهُمَّ أَعْطِفْ قَلْبَ فُلانِ بْنِ فُلانَة عَلَى فُلانة بِنتِ فُلانة
Allahumma a`tif qalba Fulan(a) [name of beloved] ibni/binti Fulana [his/her mother's name] `ala Fulan(a) [your name] ibni/binti Fulana [your mother's name].
If name of his/her mother is not known say Hawwa’ حَوَّاء.
5- Wrap it up carefully and hang it on your right arm or shoulder like a ta`wiz.
Steps 1-4 can be done by a trustworthy, pious person other than the subject.