يَا أَيُّهَا الَّذِينَ آمَنُوا إِن تَتَّقُوا اللَّهَ يَجْعَل لَّكُمْ فُرْقَانًا وَيُكَفِّرْ عَنكُمْ سَيِّئَاتِكُمْ وَيَغْفِرْ لَكُمْ وَاللَّهُ ذُو الْفَضْلِ الْعَظِيمِ
"O you who have believed, if you fear Allah, He will grant you a criterion (to distinguish right from wrong) and will remove from you your misdeeds and forgive you. And Allah is the possessor of great bounty." (Surah Al-Anfal 8:29)
Simple Meaning: If you try your best to be careful and clean, Allah will help you know what is right and forgive your mistakes.
Regarding your question, if someone tells you there is najasah (impurity) in the place you want to pray, but you do not see it yourself, you should try to check carefully. If you still cannot find any impurity, your prayer is valid. The default assumption in Islam is purity unless impurity is certain or clearly visible.
**Hadith Source:** Sahih Muslim
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ، قَالَ: قَالَ رَسُولُ اللَّهِ ﷺ: "إِنَّمَا الطَّهُورُ شَطْرُ الإِيْمَانِ"
"Purity is half of faith." (Sahih Muslim, Hadith 223)
Simple Explanation: Keeping clean is very important in Islam, but you only need to worry about real, clear impurity.
**Scholars’ Explanation:**
Imam Ibn Qayyim stated in his book that if there is doubt about najasah and no clear evidence, the place should be considered clean until proven otherwise. This is based on the principle that certainty is not removed by doubt.
**Takeaway:**
If someone says there is najasah but you don't see it after checking, you can pray there. Islam teaches us to assume purity unless impurity is certain.
Allah knows best.