We have examined whether or not al‐Ghazzâlî was a man of investigationtahqiqaccording to methodology of Islamic Jurisprudence and how heevaluated the former scholars’ views based on his references to al‐Bâqillânî, ascholar who lived about a century before him. At the beginning of our article,we have presented information about these two scholars’ positions withinmethodology of Islamic Jurisprudence. Then, we have dealt with how al‐ Bâqillânî’s views were transmitted to al‐Ghazzâlî. Finally, we have evaluatedal‐Ghazzâlî’s references to al‐Bâqillânî under three separate sub‐sections as“al‐Bâqillânî’s views agreed by al‐Ghazzâlî, his views disagreed by al‐Ghazzâlî,and his views that are fundamentally agreed by al‐Ghazzâlî but have some dif‐ ferences in details.”