5. A number of our people have narrated from Ahmad ibn Muhammad from ‘Isma‘il ibn Bazi’ who has said the following: “I wrote to al-Rida’ عليه السلام, and asked if it is permissible to walk in the shadow of the carriage on camel back. He (the Imam) wrote back, ‘Yes, it is permissible.’ Another man had asked about preparing a shadow for one in the state of Ihram because of rain or sun and I was listening, he (the Imam) commanded him to pay a ransom of one sheep to be slaughtered in Mina.”