How can one be scrupulous in matters where scholars have differed, such as a menstruating woman reciting the Quran, between prohibition and permissibility, in a way that achieves piety by avoiding sin and gaining reward, especially when there is a need to review the memorized Quran?

The recitation of the Quran by a menstruating woman is a matter of disagreement among jurists. Acting cautiously and avoiding disagreement is commendable, as the Prophet (peace be upon him) said: "So whoever guards against doubts, he has indeed protected his religion and his honor," and his saying: "Leave what makes you doubt for what does not make you doubt."

However, disagreement is not observed in every issue. The most complete approach is to strive to know the preponderant opinion among the sayings of the people of knowledge. If this is not possible, then one should seek a fatwa (definition) from someone whose knowledge and piety they trust. Absolute reliance on caution may lead to hardship or deprive one of virtue, such as raising hands in the transitional takbirat (during prayer), repeating Umrah (definition), and the time of Asr prayer.

Caution should not be a general approach in all matters of disagreement, especially if it leads to missing out on a great reward or introduces hardship. Disagreement is observed in issues where the disagreement is strong and difficult to preponderate, or if it results in an increase in reward or safety from sin, with specific guidelines: that it does not lead to another disagreement, that it does not contradict an established Sunnah (definition), and that its basis is strong. Avoiding disagreement is weakened if it leads to preventing an act of worship or missing out on a great virtue.