TAFA’UL OR FAAL AND ISTIKHARAH FROM QURAN
Quoting the book of al-Da’awat by al-Khatib al-Mustaghfiri, Sayyid Ibn Tawus has reported the Holy Prophet (s) to have said:
“When you want to seek (tafa’’ul) in the Book of Allah the Almighty and All-majestic, you may recite Surah al-Tawhid three time, invoke Allah’s blessings upon the Holy Prophet (s) and his Household three times, and say these words:
اَللّهُمَّ اِنّى تَفَاءَّلْتُ بِكِتابِكَ وَ تَوَكَّلْتُ عَلَيْكَ فَاَرِنى مِنْ كِتابِكَ ما هُوَ مَكْتُومٌ مِنْ سِرِّكَ الْمَكْنُونِ فى غَيْبِكَ
You may then open a (complete) copy of the Holy Qur’an and take the FAAL from the first line on the first side (i.e. of the two pages) without counting the papers or the lines.”
Its always better to get the opinion of a Muslim scholar on such things and not use ones own opinion.