Is it correct to combine memorizing the Holy Quran and Sahih al-Bukhari at the same time, or is it more appropriate to focus on memorizing the Quran first, especially given a vow related to memorizing the Quran and the desire to complete both memorizations together?

We advise you to strive diligently in memorizing the Qur’an first, to fulfill your vow and avoid distraction. Once you have completed it, then pursue knowledge by connecting with scholars in your area, who can guide you. For memorizing the Qur’an, seek help by organizing your time, communicating with a proficient teacher, and supplicating to Allah.