Zadhan (may Allah have mercy on him) said that Sayyiduna Ibn Abbas (may Allah be pleased with them both) once fell into an illness from which he became very heavy, so he gathered his sons and his household around him and said: "Indeed, I heard the Messenger of Allah (peace and blessings be upon him) saying: 'Whoever performs Hajj on foot from Makkah until he returns to Makkah, for every step there will be written for him seven hundred good deeds from the good deeds of the Haram.' A man asked: 'O Messenger of Allah! What are the good deeds of the Haram?' He (peace and blessings be upon him) said: 'Each good deed of it is equal to one thousand good deeds.'"
No one narrated this hadith from Isma'il except Isa.
Hadith Referenceالمعجم الأوسط / باب الألف / 2675
Hadith Takhrij«أخرجه ابن خزيمة فى «صحيحه» برقم: 2791، والضياء المقدسي فى «الأحاديث المختارة» برقم: 47، 44، والحاكم فى «المستدرك» برقم: 1698، والبيهقي فى «السنن الكبرى» برقم: 8737، 20165، والبزار فى «مسنده» برقم: 4745، 5120، وابن حجر فى «المطالب العالية» برقم: 1135 / 2، والطبراني فى «الكبير» برقم: 12522، 12606»