Preaching Hazrat Usman (Rad.A) spent a lot of his time in preaching to the prisoners of war. Many of them accepted Islam because of his efforts. He also taught Islamic law to the Muslims. Once he himself demonstrated the correct method of making wuzu before a large gathering of Muslims. He took special care to send missionaries to various places and appointed teachers to teach Islamic law, the Holy Qur’an and Hadith. Persons were appointed to make the rows (saffs) of worshippers straight during a congregational Salat specially on Fridays when the congregation was quite large. Construction of Buildings, Bridges, Roads and Embankments A number of new buildings were constructed for offices at various places. Rest houses were constructed on various high ways
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and guest houses were built in various cities like Kufa for the welfare of the general public, new bridges and roads were constructed, and general condition of various roads was improved. The roads leading to Medina were given special attention. He got tanks made and wells dug up along many roads to supply water to the travellers.
Medina was not safe from floods, sometimes the buildings of the Prophet’s mosque were in danger. Hazrat Usman (Rad.A) constructed a strong embankment along that side of the city which used to get flooded. This was known as the embankment of Mahroz.
